A6K250R - 250Amp Fuse

A6K250R - 250Amp Fuse

When your electrical systems face high fault currents, having the right fuse in place can make all the difference. The Mersen A6K250R Amp-Trap® Class RK1 Fast-Acting Fuse is built to deliver fast, dependable overcurrent protection for commercial and industrial applications where uptime and equipment protection matter. Designed with a 250 amp rating and rated for 600VAC / 300VDC, this current-limiting fuse reacts quickly to overloads and short circuits before they can cause costly damage to motors, transformers, switchboards, and other critical electrical equipment.

Whether you're maintaining an industrial facility, upgrading a commercial electrical system, or protecting sensitive branch circuits, this Class RK1 fuse delivers the kind of performance electrical professionals count on every day.

Key Features and Benefits

• Fast-Acting Overcurrent Protection: Responds rapidly to short circuits and overload conditions to help minimize equipment damage and reduce downtime.
• Class RK1 Current-Limiting Design: Helps reduce the amount of destructive fault current passing through your electrical system.
• High 200 kA Interrupting Rating: Ideal for systems with high available short-circuit current levels.
• 250 Amp Capacity: Supports demanding commercial and industrial electrical applications.
• 600VAC / 300VDC Rated: Suitable for both AC and DC circuit protection requirements.
• Durable Construction: Built with a PolyTube insulating body and tin-plated copper terminals for dependable long-term performance.
• Blade Terminal Configuration: Designed for secure clip mounting and reliable electrical connections.
• Trusted Circuit Protection: Excellent for branch circuits, feeder circuits, transformers, motor control centers, and distribution equipment.
  

Technical Specifications

• Manufacturer Part Number: A6K250R
  
• Product Series: A6K-R
  
• Product Type: Class RK1 Fast-Acting Fuse
  
• Ampere Rating: 250A
  
• Rated AC Voltage: 600VAC
  
• Rated DC Voltage: 300VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class RK1
  
• Speed: Fast-Acting
  
• Interrupting Rating: 200 kA AC
  
• Mounting Type: Clip Mount
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Length: 11.63 in
  
• Product Diameter: 2.56 in
  
• Product Weight: 3.22 lb
  
• UPC: 782001915841
  

Material Compliance and Certifications

• UL recognized Class RK1 fuse design
• Designed for low-voltage UL/CSA fuse applications
• Manufactured for commercial and industrial electrical systems
• Meets industry standards for current-limiting overcurrent protection
  

Where It Works Best

• Common applications include:
• Industrial power distribution systems
• Branch and feeder circuit protection
• Motor control centers
• Switchboards and panelboards
• Transformer protection
• Manufacturing facilities
• Commercial electrical infrastructure
• Backup protection for downstream devices

From large industrial operations to commercial facilities with demanding electrical loads, the A6K250R provides the fast response and dependable protection needed to help keep systems operating safely and efficiently.